18666510080 has 36 divisors (see below), whose sum is σ = 44712127992. Its totient is φ = 7466603520.

The previous prime is 18666510077. The next prime is 18666510089. The reversal of 18666510080 is 8001566681.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18666510089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7290326 + ... + 7292885.

Almost surely, 2^18666510080 is an apocalyptic number.

18666510080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18666510080 is an abundant number, since it is smaller than the sum of its proper divisors (26045617912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18666510080 is an equidigital number, since it uses as much as digits as its factorization.

18666510080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14583232 (or 14583218 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 18666510080 in words is "eighteen billion, six hundred sixty-six million, five hundred ten thousand, eighty".